Dehumidifier Reviews – The Buyer’s Guide
Hello and welcome to Dehumidifier-Reviews.co.uk, your one-stop-shop for all information regarding dehumidifiers. If you’ve already bought a dehumidifier then please share your thoughts with us. If you’re in the market for a new dehumidifier then this site will give you all the information you need. If you’re totally new to the thought of a dehumidifier and don’t know where to begin, the buyer’s guide below would be a great place to start.
Editor’s Choice Dehumidifiers
Things To Consider When Choosing a Dehumidifier
Most dehumidifiers have auto-drain abilities, which means you can site the machine next to a drain and have the collected water run away automatically, rather than collecting in the internal bucket, which requires that you empty it periodically.
Some dehumidifiers purify the air in addition to removing humidity. They can filter the air of bacteria, mould spores and other allergens using filters with special coatings. Some dehumidifiers possess ionisers, which also help to remove these baddies from the air. The EcoAir DD122FW mk5 has all of the features listed and more.
Desiccant dehumidifiers are much lighter (half the weight of refrigerant varieties) and generally smaller too, so would be better suited to small spaces and being moved around. The EcoAir DD122 Mini is a great example – it is the lightest and smallest full-sized dehumidifier on the market, weighing just 5.1kg. Domestic refrigerant dehumidifiers start at about 10kg and the very powerful machines can get up to 15kg.
As well as weight, the design of the carry handle will decide how easy the appliance is to carry around. Most units have top-mounted handles that are hidden in the top of the bodywork when not in use; these are the best design. Some machines have ‘holes’ that you can use to lug the appliance around. These are not as good as they leave you hunched over like a gorilla while carrying the machine from place to place.
Finally, some dehumidifiers are mounted on castor wheels to allow the machine to be rolled into place. These are a useful addition, but can look ugly if not hidden behind some sort of skirt.
Particularly when you first switch on a new dehumidifier you will notice extra noise because the machine will be working hard to reduce the excess humidity. However you should notice that after a number of days, once the humidity levels have been brought under control by the machine, that the noise lessens greatly. Also remember that the machine will not be dehumidifying 24 hours a day, only when the humidity increases beyond the desired levels (generally a few hours each day).
If the dehumidifier will be in a ‘noise-sensitive’ location, such as the room you watch television, then choosing the right machine will be very important. In this case, we’d recommend that you go for a desiccant dehumidifier, such as the DD122 Mini, which produces just 32dB and is the quietest dehumidifier on the market.
- The size of your home or the particular room you wish to target.
- The humidity levels in your home and contributing factors such as drying clothes indoors, long showers, poor insulation, etc.
- Your desired humidity level. The ideal range is between 40% to 60% relative humidity depending on the temperature and personal preference.
The extraction performance of each dehumidifier will be rated in the number of litres extracted per day, but this is not as clear as it looks. Firstly, these are measured under the absolute ideal conditions for extracting humidity, which is roughly 30°C and 80% relative humidity. Clearly these tropical conditions are very seldom going to be experienced in the UK.
The second reason why these ratings can be confusing is because of the difference between refrigerant and desiccant dehumidifiers. Refrigerant machines often have seemingly higher extraction rates, but note that this difference may only be seen at the high temperatures and humidities that the extraction rates are tested under. In fact, under UK conditions, a desiccant dehumidifier rated at 7 litres per day should extract about the same as a refrigerant dehumidifier rated at 14 litres per day. This is because desiccant dehumidifiers extract similar amounts at all temperatures and humidities. We’ll give more details about the differences between types of dehumidifiers later.
Our dehumidifier reviews will tell you the maximum house size for each appliance on the market, or you can check out our dehumidifier comparison table.
In every dehumidifier review that we create we provide a link to the current cheapest price that can be found.
Types of Dehumidifiers
There are a few major flaws with refrigerant technology, which can’t be mitigated easily, namely:
- The required compressor can be a bit noisy
- The required compressor makes them heavy and bulky
- They are not effective at low temperatures below 15°C, such as those experienced in garages, sheds and boats.
They may not last as long as refrigerant types. Sometimes they can suffer from a burning smell during the first use, but almost always this goes after a couple of hours.
DO NOT BUY THESE – they are extremely inefficient and weak; they will be unable to affect the humidity of a room. One day the technology will improve and we’ll all be using them, but certainly not for the time being.